Magento 1.9 Event Observer – Product Quantity and Status Change Issue

cataloginventoryevent-observermagento-1.9

I have created an event which checks that if the backorder quantity of an item is greater than zero than set the ordered product quantity to zero instead of keeping it in negative and also change its status to out of stock but nothing works.

config.xml

<sales_order_place_after>
                <observers>
                    <some_random>
                        <class>My_Model_Observer</class>
                        <method>checkBackOrder</method>
                    </some_random>
                </observers>
            </sales_order_place_after>

Observer.php

public function checkBackOrder($observer)
    {
        $order = $observer->getOrder();
        $customer = $order->getCustomer();
            foreach ($order->getAllItems() as $item)
            {
                if ($item->getProductType() == 'simple') {
                    $product = Mage::getModel("catalog/product")->load($item->getProductId());

                    if ($item->getQtyBackordered() > 0) {
                        $webQty = $product->getStockItem()->getQty();
                    if ($webQty <= 0) {
                        $this->_changeStockStatus($product);
                      }
                    }
                }
            }
    }

protected function _changeStockStatus($product)
    {
        $webStockId = Mage::app()->getWebsite()->getStockId();
        $store = Mage::app()->getStore()->getStoreId();

        $stockItem = Mage::getModel('cataloginventory/stock_item')->setStoreId($store)->loadByProduct($product->getId());
        $stockItem->setData('qty', 0);
        $stockItem->setIsInStock(false)->setStockId($webStockId)->save();
    }

As you can see in the code that I am not doing something complex except trying to change the item quantity and setting it status to "Out of stock" but when I execute this code it does not change the quantity or the status of an item.

Can someone please tell me what I am doing wrong here?

Best Answer

Try the following.

       // Check if there is a stock item object
    $stockItem = Mage::getModel('cataloginventory/stock_item')->loadByProduct($product->getId());
    $stockItemData = $stockItem->getData();
    if (empty($stockItemData)) {
    // Create the initial stock item object
    $stockItem->setData('manage_stock',1);
    $stockItem->setData('is_in_stock',$qty ? 1 : 0);
    $stockItem->setData('use_config_manage_stock', 0);
    $stockItem->setData('stock_id',1);
    $stockItem->setData('product_id',$product->getId());
    $stockItem->setData('qty',0);
    $stockItem->save();

    // Init the object again after it has been saved so we get the full object
    $stockItem = Mage::getModel('cataloginventory/stock_item')->loadByProduct($product->getId());
}

// Set the quantity
$stockItem->setData('qty',$qty);
$stockItem->save();
$product->save();

And the just save the product. Also you can refer few links here,
How can i quick update of qty and stock and all inventory fields in Magento
How to set a product to be in/out of stock programatically

Related Solutions

Magento – sales_order_place_after event not working

It happens in an ajax request, so you don't see the "echo" output in the frontend. If you inspect the response in the browser console you should see it.

I recommend to set up xdebug for step by step debugging. Then you can use a breakpoint instead of echo and exit. You also get information at runtime about variables and the call stack. It's really worth the initial effort.

Magento – Event for bulk updating product status

For Magento >= 1.9.2.0:

The event you are looking for is catalog_controller_product_mass_status, it is dispatched under the massStatusAction of app/code/core/Mage/Adminhtml/controllers/Catalog/ProductController.php

However this event only provides the ids of the products that are mass updated, which you can retrieve this way in your observer:

$productsIds = $observer->getEvent()->getProductIds();

For Magento >= 1.6.0.0-beta1:

On top of that you can also observe one of the following events (depending on your needs):

catalog_product_attribute_update_before which is dispatched in the updateAttributes method of the app/code/core/Mage/Catalog/Model/Product/Action.php
catalog_product_attribute_update_after which is dispatched in the same location as the previous one

BEWARE: thore events are not only triggered by the mass status action, they are also triggered by other Magento functionalities, use with care.

As the massStatusAction method calls the following code, those two events will be dispatched:

Mage::getSingleton('catalog/product_action')
            ->updateAttributes($productIds, array('status' => $status), $storeId);

You can use two two events in your observer this way:

For the first event:

// Get the attribute data
$attributesData = $observer->getEvent()->getAttributesData();
// Get the product ids
$productIds = $observer->getEvent()->getProductIds();
// Get the store id
$storeId = $observer->getEvent()->getStoreId();

For the second one you can only do:

// Get the product ids
$productIds = $observer->getEvent()->getProductIds();

For Magento < 1.6.0.0-beta1:

I guess the last solution here is to observer one the following event: controller_action_predispatch_adminhtml_catalog_product_massStatus

You can use it in your observer this way:

// Get the request
$request = $observer->getEvent()->getControllerAction()->getRequest();
// Get the product ids
$productIds = $request->getParam('product');
// Get the store id
$storeId = (int)$request->getParam('store',0);
// Get the status applied
$status = $request->getParam('status');

Best Answer

Related Solutions

Magento – sales_order_place_after event not working

Magento – Event for bulk updating product status

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